20557989 is an odd 8-digits composite number following 20557988
and preceding 20557990 . In scientific notation, it is written as 2.0557989 × 10^7.
The sum of its digits is 45. It has a total of 2 prime factors and 4 positive divisors.
There are 13705308 positive integers (up to 20557989) that are relatively prime to 20557989.
20557989 has 4 divisors, whose sum is 21319424
The reverse of 20557989 is 98975502
Previous prime number is 27
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
twenty million five hundred fifty-seven thousand nine hundred eighty-nine
Scientific notation
2.0557989 × 10^7
Engineering notation
2.0557989 × 10^6
Prime Factorization
27 × 761407
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20557989
Product of the distinct prime numbers
The prime factorization of 20557989 is 27 × 761407.
Since it has a total of 2 prime factors.
5 , 9 , 49 , 66 , 245 , 164 , 2955 , 5006 , 93338 , 85140 , 458028 , 533008 , 5941346 , 7629662 , 41560188 , 38646323 , 104534803 , 660230141 , 7622190411 , 9069147855
n×2
41115978
n×3
61673967
n×4
82231956
n×5
102789945
n÷2
10278994.5
n÷3
6852663
n÷3
5139497.25
n÷5
4111597.8
n2
422630911724121
n3
8.6884416342845E+21
n4
1.7861688754476E+29
n5
3.6720040093594E+36
2 √n
4534.0918605604
3 √n
273.94300144584
4 √n
67.335665590832
5 √n
29.013233007058
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20557988
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20557989 can be divided by 4 positive divisors.
The sum of these divisors (counting 20557989) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110011011000010100101
3
Ternary
1102200110021000
4
Quaternary
1032123002211
5
Quinary
20230323424
6
Senary
2012343513
8
Octal
116330245
10
Decimal
20557989
12
Duodecimal
6a74b99
16
Hexadecimal
139b0a5
20
Vigesimal
689ej9
36
Base36
c8mn9
md5
0c60c9e51c478b62869557aedf867318
sha1
b86e8bc3c03c36b7a3127c2a747b9ee761b9481f
sha256
21ffe0d1ba3422edb0b5bbd3f30506a2b22741f704265a1e92c4f7daecddb6bc
sha512
7c27346e7016bf456317ec57c1d7500e38f457a327a9c7adbd8064f6d127d56ea55eeaca7aa482878a013c55098b2af8f34fad09d58d05002c8dd0fa7606b0e2
ripemd-160
d619631ad6801df7ac518a70a4353b47017a0491
Diameter
41115978
Circumference
129169654.42996
Area
1.3277341674525E+15
Volume
3.6394059212549E+22
Surface area
5.3109366698098E+15
Circumference
129169654.42996
Perimeter
82231956
Area
422630911724121
Diagonal
29073386.858917
Surface area
2535785470344726
Volume
8.6884416342845E+21
Space diagonal
35607481.449442
Perimeter
61673967
Area
1.8300455298883E+14
Altitude
17803740.724721
Surface area
1.8300455298883E+14
Volume
1.0239426662577E+21
Height
9691128.9529723